Recently, the high-tech composite materials jointly developed by Baotou Deyi, Beijing Bluestar and Sinoma Technology were successfully applied in domestic truck carriages for the first time, realizing the leap-forward development of lightweight trucks in China and making composite materials in China The application technology in the lightweight field has reached the international advanced level.
The composite car is 40% lighter than the corresponding metal car. Its carbon fiber pultruded extrusions have low manufacturing cost, stable quality, high fiber content, and high strength. The flexible structure and ply design can be applied to different conditions of use. A highly marketable product can be used as a basic product for advanced structural materials in the future and has a broad space for development.
In recent years, with the growth of China's expressway network, the advantage of heavy trucks in terms of transportation efficiency has been highlighted, stimulating the rapid growth of the heavy truck market. In 2011, the production and sales volume of China's heavy trucks exceeded 1 million, and the country’s total capacity reached approximately 5 million vehicles. In addition to the development of large-tonnage and multi-axis freight vehicles, highway freight vehicles have become increasingly prominent in issues such as overload, high energy consumption, and high pollution. With the development of energy-saving and environmental protection requirements for road traffic throughout the country and the full implementation of the policy for the weight-based charging of freight vehicles, Heavy-duty truck lightweight technology research was quickly put on the agenda. Heavy truck light weight can not only reduce truck trim quality, increase loading quality, improve truck operation ability, reduce energy consumption, reduce carbon dioxide and other pollutant emissions, but also reduce the freight industry, while ensuring the truck's strength and safety performance. The phenomenon of overloading ensures traffic and road safety, with economic, environmental and safety triple benefits.
At the beginning of 2010, the truck lightweight project team undertook the research and development work on the light truck compartment of the truck, trying to overcome the technical difficulties of composite materials such as poor impact resistance, poor wear resistance, and low rigidity. The project team started from the existing metal material compartments, and through data modeling and finite element analysis, carried out structural design and analysis and verification of composite materials. The research and development of extended structural materials and high fiber content, high strength, and broad development space The research and development of extrusion profiles was carried out on the basis of the original pultrusion equipment. Through repeated process adjustments, continuous large tow carbon fiber pultruded profiles were successfully produced. The project also introduced a new material, polydicyclopentadiene (PDCPD), to improve the performance of the adhesive layer on the surface of the composite. The successful development of composite materials through the application and analysis of the domestic 8.6 meters dump truck concept car, the data exceeds the domestic indicators. According to reports, the project is in line with the national industrial development policy and adopts a composite material automobile car, which reduces the weight of the car and saves energy. The development prospect is broad and the social benefits are obvious.
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